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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 7 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 7

From: Role of MRI special diffusion weighted imaging/diffusion tensor imaging techniques in the assessment of perianal fistula activity

Fig. 7

a axial T2WI, b DWI and c ADC maps for an inter-sphincteric track surrounding the sphincter from 6 to 9 O’ clock with internal opening breaching the internal sphincter at 7–8 O’ clock and showing high T2WI SI bright DWI signal with still high ADC signal (not true restriction) in spite of being clinically and DTI active with low FA and ADC values as shown in axial DTI/T2 fused images with ROI (FA and ADC) values placed in d the inter-sphincteric track, e ipsilateral and contralateral sphincters and f surrounding edema area with FA values 0.413, 0.933, and 0.772 and 0.719 with ADC values 1.212, 0.484, 0.613 and 0.408 × 103 mm2/s, respectively

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